Oil burner



June 23, 1931. s. TAKIMIZU ET AL 1,811,371

OIL BURNER Filed Dec. 10, 1929 nvvmyroms:

Patented June 23, 1931 UNITED STATES PATENT OFFICE BATORU rAxnnzU, or TOYOTAMA GUN,'10KYO no, AND nrnosnr IDEMITSU, or

' SUSAKI ruKUoxA, JAPAN OIL BURNER Application filed December 10, 1929, Serial No. 418,004, and in Japan December 31, 1928.

This invention relates to an oil burner, wherein a number of perpendicular p1 es having their lower ends open in the space tween the outer and inner perforated tubes and their upper ends communicating with a vaporizing chamber at the upper part of the inner tube, are inserted in several vertical channels around the inner tube and wherein fuel oil is supplied to the vaporizing chamher in a dri ping condition. The ob ect thereof is to dbtain a device which prevents the oil from reaching the burner in a liquid form by gasifying it perfectly and conse-- quently is suitable especially for low class oils.

Referring to the accompanying drawings,

Figure 1 is a central longitudinal sectional view of the oil burner of this invention;

Figure 2, a plan of the same with parts shown cut away;

Figure 3, a central longitudinal sectional view on a plane at right angles to the plane of Fig. 1; and

Figure 4, a detailed perspective of the essential parts.

lln the drawings, A is the inner tube, and B the outer tube, both having their peripheries pierced with a number of holes 1. There is suitable space left between the two tubes.

Around the inner tube A are constructed several vertical channels 2 for receiving perpendicular pipes U, the upper ends of which protrude in the va orizing chamber D around its bottom in suc a manner that they can be detached together with the vaporizing chamber when it is necessary to clean the burner. The vaporizing chamber D is located in the upper part of the inner tube and .has a cover 3 which can be opened when it is desired to clean the interior of the vaporizing chamber or to remove the pitch or the like produced by low-class oils. The pipe 4 is provided at its outerend with a hopper 5 so as to drop the oil on the bottom and the oil in a tank 6 drips down from a valve 7 A pipe 8 is attached to the hopper at a position a little lower than the upper end of the perpendicular pipes C, so that the superabundant oil is discharged from it instead of flow ing into the perpendicular pipes from the vaporizing chamber, and thus the oil is prevented from reaching the burner directly. E is a cover having supporting rods 9 to hold the inner and outer tubes, at the lower parts of which a receiver F with an asbestos ring 10 is provided in such a manner as to be moved up and down by a cam 11 and also a pipe 12 and a hopper 13 for supplying the fuel oil are provided.

When petroleum, light oil, etc. flow into the hopper 13 and permeate the asbestos ring through the pipe 12, the ring is lighted, and then the flame will rise along the space between the inner and outer tubes, thus heating the vaporizing chamber at once. At this time 35 1f the valve 7 is opened suitably, the fuel oil will drip down on the bottom of the vaporizing chamber through the pipe 4. The vaporizing chamber being heated well and especiallyl because of its bottom being connected with t e upper plate of the inner tube and consequently red-heated by the conduction of heat, the dripping oil is gasified immediately. The gas thus produced fills the vaporizing chamher and goes in a reverse direction along the perpendicular pipes C so as to be superheated in the space between the inner and outer tubes. Therefore, the superheated gas is in such a condition as to be ignited immediately it jets from the lower ends of a number of the pipes C and ascends sucking the proper amount of air from a number of holes covering the two tubes, thereby burning perfectly. Thus, as according to this invention the fuel oil is supplied in a dripping condition, it can not only be gasified at once without the necessity of heating a large quantity of oil, but as it drips down on the red-hot bottom of the vaporizing chamber, it is gasified very quickly. Moreover, as the gas is conducted by the pipes protruding in the vaporizing chamber, there is no fear of the oil flowing down in a liquid form. Further, it is directed downwardly in a reverse direction byseveral pipes and also advances slowly in the flames in the space between the inner and outer tubes, so that it is heated to a very high temperature and burns continually, while at the lower end of the opening the gas merely jets. It then ascends 1n the space between 109 the inner and outer tubes having a number of holes, where it receives a sufiicient supply of I air to burn erfectly.

For the a ove reason, in the resent invention it is possible to use such ow class oils as heavy oil not tomention petroleum and light oil and to prevent the damage apt to be or burners.

. caused by dust and pitch sticking to the pipes We claim:

An oil burner, comprising in combination,

an inner and an outer perforated tube disposed in concentric relatlon, said tubes form- Y ing a combustion chamber in the space between them, the said inner tube having a number of vertical channels at its periphery, a vaporizing chamber disposed above said inner tube, avapor conducting pipe disposed in each of said channels and communicating with the vaporizing chamber at a point near its top wall, an asbestos ring disposed in the lower end of said combustion chamber, said tubes communicating with the combustion chamber immediately above said ring, means for suppl 'ng fuel to said ring for initially lighting t' e burner, and a source of fuel supply communicating with said vaporizing chamber at a point near its bottom wall.

In testimony whereof, we have signed our names to this'specification at Tokyo, Japan, this 28th day of October 1929.

SATORU TAKIMIZU.

HIROSHI IDEMI'JISU. 

